Add 2/21 and 6/40
2/21 + 6/40 is 103/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
2/21 = 2 × 40/21 × 40 = 80/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
6/40 = 6 × 21/40 × 21 = 126/840 - Add the two like fractions:
80/840 + 126/840 = 80 + 126/840 = 206/840 - 206/840 simplified gives 103/420
- So, 2/21 + 6/40 = 103/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+6/40 2/21+12/40 2/42+6/40 2/21+6/80 6/21+6/40 2/21+18/40 2/63+6/40 10/21+6/40 2/21+30/40 14/21+6/40 2/21+42/40